Finding the Third Proportional to 20,817.50 and 31,745

Step by Step Solution

1. Step 1: Write the proportion equation
   20,817.50 : 31,745 = 31,745 : x
2. Step 2: Convert to fraction form
   20,817.50/31,745 = 31,745/x
3. Step 3: Cross multiply
   20,817.50x = 31,745 × 31,745
4. Step 4: Simplify right side
   20,817.50x = 1,007,745,025
5. Step 5: Solve for x
   x = 1,007,745,025/20,817.50
6. Step 6: Final answer
   x = 48,408.55